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<div class="title">arm_sin_cos_example_f32.c</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Copyright (C) 2010-2012 ARM Limited. All rights reserved.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* $Date:         12. March 2014</span></div>
<div class="line"><span class="comment">* $Revision:     V1.4.3</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Project:       CMSIS DSP Library</span></div>
<div class="line"><span class="comment">* Title:         arm_sin_cos_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description:   Example code demonstrating sin and cos calculation of input signal.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
<div class="line"><span class="comment">* are met:</span></div>
<div class="line"><span class="comment">*   - Redistributions of source code must retain the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><span class="comment">*   - Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><span class="comment">*     notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><span class="comment">*     the documentation and/or other materials provided with the</span></div>
<div class="line"><span class="comment">*     distribution.</span></div>
<div class="line"><span class="comment">*   - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
<div class="line"><span class="comment">*     may be used to endorse or promote products derived from this</span></div>
<div class="line"><span class="comment">*     software without specific prior written permission.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
<div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
<div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
<div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
<div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
<div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
<div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><span class="comment">* -------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Defines each of the tests performed</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="preprocessor">#define MAX_BLOCKSIZE   32</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define DELTA           (0.0001f)</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Test input data for Floating point sin_cos example for 32-blockSize</span></div>
<div class="line"><span class="comment">* Generated by the MATLAB randn() function</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a0"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a8b3b7113988efd5bf11a247d07ae39a1">testInput_f32</a>[<a name="a1"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =</div>
<div class="line">{</div>
<div class="line">  -1.244916875853235400,  -4.793533929171324800,   0.360705030233248850,   0.827929644170887320,  -3.299532218312426900,   3.427441903227623800,   3.422401784294607700,  -0.108308165334010680,</div>
<div class="line">   0.941943896490312180,   0.502609575000365850,  -0.537345278736373500,   2.088817392965764500,  -1.693168684143455700,   6.283185307179590700,  -0.392545884746175080,   0.327893095115825040,</div>
<div class="line">   3.070147440456292300,   0.170611405884662230,  -0.275275082396073010,  -2.395492805446796300,   0.847311163536506600,  -3.845517018083148800,   2.055818378415868300,   4.672594161978930800,</div>
<div class="line">  -1.990923030266425800,   2.469305197656249500,   3.609002606064021000,  -4.586736582331667500,  -4.147080139136136300,   1.643756718868359500,  -1.150866392366494800,   1.985805026477433800</div>
<div class="line"></div>
<div class="line"></div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a2"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a8bcb5c1f75ed5f1737e435f0de1850a3">testRefOutput_f32</a> = 1.000000000;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Declare Global variables</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line">uint32_t <a name="a3"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a> = 32;</div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a4"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>;</div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a5"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>;</div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a6"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>;</div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a7"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>;</div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>  <a name="a8"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Max magnitude FFT Bin test</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6">arm_status</a> <a name="a9"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;</div>
<div class="line"></div>
<div class="line">int32_t <a name="a10"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line">  <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> diff;</div>
<div class="line">  uint32_t i;</div>
<div class="line"></div>
<div class="line">  <span class="keywordflow">for</span>(i=0; i&lt; <a class="code" href="arm__sin__cos__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>; i++)</div>
<div class="line">  {</div>
<div class="line">    <a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a> = <a name="a11"></a><a class="code" href="group__cos.html#gace15287f9c64b9b4084d1c797d4c49d8">arm_cos_f32</a>(<a class="code" href="arm__sin__cos__example__f32_8c.html#a8b3b7113988efd5bf11a247d07ae39a1">testInput_f32</a>[i]);</div>
<div class="line">    <a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a> = <a name="a12"></a><a class="code" href="group__sin.html#gae164899c4a3fc0e946dc5d55555fe541">arm_sin_f32</a>(<a class="code" href="arm__sin__cos__example__f32_8c.html#a8b3b7113988efd5bf11a247d07ae39a1">testInput_f32</a>[i]);</div>
<div class="line"></div>
<div class="line">    <a name="a13"></a><a class="code" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b">arm_mult_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a85b1050fcef4347d69f35a9aee798f8a">cosOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>, 1);</div>
<div class="line">    <a class="code" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b">arm_mult_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a1e232694019f6b61710fbff5ee27126c">sinOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>, 1);</div>
<div class="line"></div>
<div class="line">    <a name="a14"></a><a class="code" href="group__BasicAdd.html#gabfef1e86e458314a61f4baa441d9765e">arm_add_f32</a>(&amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a2cb185794dcb587d158f346ab049cc4e">cosSquareOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#aa5a66e866ebb91eb971f2805209e9d36">sinSquareOutput</a>, &amp;<a class="code" href="arm__sin__cos__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>, 1);</div>
<div class="line"></div>
<div class="line">    <span class="comment">/* absolute value of difference between ref and test */</span></div>
<div class="line">    diff = fabsf(<a class="code" href="arm__sin__cos__example__f32_8c.html#a8bcb5c1f75ed5f1737e435f0de1850a3">testRefOutput_f32</a> - <a class="code" href="arm__sin__cos__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>);</div>
<div class="line"></div>
<div class="line">    <span class="comment">/* Comparison of sin_cos value with reference */</span></div>
<div class="line">    <span class="keywordflow">if</span> (diff &gt; <a name="a15"></a><a class="code" href="arm__sin__cos__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)</div>
<div class="line">    {</div>
<div class="line">       <a class="code" href="arm__sin__cos__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a name="a16"></a><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;</div>
<div class="line">    }</div>
<div class="line"></div>
<div class="line">    <span class="keywordflow">if</span> ( <a class="code" href="arm__sin__cos__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> == <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>)</div>
<div class="line">    {</div>
<div class="line">       <span class="keywordflow">while</span> (1);</div>
<div class="line">    }</div>
<div class="line"></div>
<div class="line">  }</div>
<div class="line"></div>
<div class="line">  <span class="keywordflow">while</span> (1);                             <span class="comment">/* main function does not return */</span></div>
<div class="line">}</div>
<div class="line"></div>
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